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Analog Devices Inc./Maxim Integrated MAX20073ATBB/V+T
- Part No.:
- MAX20073ATBB/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX20073ATBB/V+T.pdf
- Description:
- IC REG 2A STEP-DOWN 2A TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
MAX20073ATBB/V+T from Maxim Integrated is a synchronous step-down DC-DC converter delivering up to 3A output current, operating from 2.7V–5.5V input, with fixed 2.2MHz switching frequency and ±1.5% output voltage accuracy over load, line, and temperature. It serves as a point-of-load regulator in automotive infotainment power rails.
For engineers reviewing the MAX20073ATBB/V+T datasheet, MAX20073ATBB/V+T pinout, MAX20073ATBB/V+T application, or MAX20073ATBB/V+T equivalent, key selection factors include factory-preset 3.3V output, 10-pin TDFN package with exposed pad, active-low RESET output, spread-spectrum enable capability, and -40°C to +125°C operation.
Technical Context
The MAX20073ATBB/V+T uses current-mode control architecture with fixed-frequency PWM operation at 2.2MHz, enabling all-ceramic capacitor designs and compact PCB layouts. Its integrated high- and low-side MOSFETs feature low RDS(ON), supporting up to 3A continuous output while maintaining >92% peak efficiency at 3.3V/2A.
It includes factory-trimmed 3.3V output (±1.5% accuracy), 0.85ms soft-start, overtemperature shutdown, cycle-by-cycle overcurrent protection, and dual voltage monitors (107% OV, 93% UV) feeding an active-low RESET signal with 20ms delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Up to 3A continuous - supports high-current SoC core or interface rail without external current sensing. |
| Input Voltage Range | 2.7V to 5.5V - compatible with automotive 3.3V/5V supplies and post-regulation from 12V buck stages. |
| Switching Frequency | 2.2MHz fixed - enables use of ≤1µH inductors and 10µF ceramic output capacitors, reducing solution size. |
| Output Voltage Accuracy | ±1.5% over load, line, and temperature - eliminates need for precision external feedback resistors in factory-preset configuration. |
| Operating Temperature | -40°C to +125°C ambient - qualified for under-hood and infotainment module deployment per AEC-Q100 stress test requirements. |
| Soft-Start Time | Fixed 0.85ms - prevents inrush current during power-up without requiring external timing components. |
| RESET Output | Active-low, 20ms delay - provides reliable power-good signaling for microcontroller or FPGA reset sequencing. |
Pinout & Package
MAX20073ATBB/V+T is housed in a 3mm × 3mm × 0.85mm, 10-pin TDFN package with exposed thermal pad (EP) for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 2.7V–5.5V input; requires local 10µF ceramic decoupling adjacent to pin. |
| SW | Switch node | Connects to external inductor; high dv/dt node requiring tight layout and minimal trace length. |
| OUT | Regulated output | Delivers up to 3A at factory-preset 3.3V; connects directly to output capacitor and load. |
| GND | Power ground | Common return for input/output paths; must be tied to EP for thermal and EMI performance. |
| EP | Exposed thermal pad | Internally connected to GND; requires soldered thermal land for junction-to-board thermal resistance < 35°C/W. |
| EN | Enable input | Active-high logic control; pulls low to disable converter and reduce quiescent current to 0.1µA. |
| SS | Soft-start capacitor connection | Not used in MAX20073ATBB/V+T - internal 0.85ms soft-start eliminates external capacitor requirement. |
| RESET | Active-low power-good output | Asserts low if output drops below 93% or rises above 107%; 20ms delay ensures stable startup before release. |
| SSEN | Spread-spectrum enable | Active-high input enabling frequency dithering to reduce conducted EMI peaks by up to 10dB. |
| FB | Feedback input | Internally connected to 3.3V preset; left unconnected when using factory-trimmed output configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-preset 3.3V output | Eliminates external resistor divider, reduces BOM count, and guarantees ±1.5% accuracy without calibration. |
| 2.2MHz fixed-frequency PWM | Enables full-ceramic design with small 1µH inductor and 22µF total output capacitance, minimizing footprint. |
| Active-low RESET with OV/UV monitoring | Provides autonomous system-level reset assertion without external supervisor IC or RC timing network. |
| Spread-spectrum enable (SSEN) | Reduces peak EMI emissions by modulating switching frequency ±10%, easing CISPR 25 Class 5 compliance. |
| Current-mode control architecture | Delivers fast transient response (< 10µs recovery from 1A step load) and inherent cycle-by-cycle current limiting. |
Applications
| Automotive Infotainment Power Rail | ADAS Camera Module Core Supply |
|---|---|
Use Scenario: Powers DSP, GPU, and display interface ICs in head-unit systems requiring clean, stable 3.3V at up to 2.5A. IC Role / Device Role / Timing Role: Primary point-of-load buck regulator delivering regulated 3.3V with RESET signaling for system boot coordination. Use Value: Factory-trimmed output eliminates resistor tolerance stack-up; 2.2MHz operation avoids AM radio band interference. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules mounted near vehicle exterior. IC Role / Device Role / Timing Role: High-reliability DC-DC converter providing 3.3V with thermal shutdown and wide-temperature operation. Use Value: -40°C to +125°C rating and overtemperature protection ensure uninterrupted operation in extreme ambient conditions. |
| Telematics Control Unit (TCU) I/O Rail | Automotive Gateway Microcontroller Core |
Use Scenario: Generates isolated 3.3V supply for CAN transceivers, cellular modem interfaces, and GPS receivers in TCU modules. IC Role / Device Role / Timing Role: Secondary buck stage stepping down from 5V pre-regulator to noise-sensitive digital I/O domain. Use Value: Spread-spectrum enable reduces EMI coupling into RF sections, improving LTE/GNSS signal integrity. | Use Scenario: Powers ARM Cortex-M7 core and cache memory in automotive gateway ECUs managing CAN FD, Ethernet, and LIN traffic. IC Role / Device Role / Timing Role: High-efficiency, low-noise core supply with precise 3.3V regulation and fast load transient response. Use Value: Current-mode control and 2.2MHz switching deliver < 20mV undershoot during 2A load steps, preventing core brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62840DLCR | 2.7V–6V input, 3A output, 2.25MHz, ±1% accuracy, no RESET output, no SSEN | Lacks integrated power-good and spread-spectrum; requires external supervisor for reset sequencing | Preferred where ultra-low IQ (150nA) dominates over RESET/SSEN functionality |
| MPQ4436AGL-AEC1-P | 3.3V–36V input, 3A output, 2.2MHz, ±2% accuracy, AEC-Q100 Grade 1, no SSEN | Wider VIN range suits direct battery input; lacks spread-spectrum and tighter accuracy | Selected for 12V-direct applications where extended input range outweighs EMI reduction needs |
Compared with TPS62840DLCR and MPQ4436AGL-AEC1-P, the MAX20073ATBB/V+T uniquely integrates active-low RESET with OV/UV monitoring and spread-spectrum enable in a 3mm × 3mm AEC-Q100-qualified package-critical for automotive infotainment and ADAS subsystems requiring robust power sequencing and EMI control.
Availability
MAX20073ATBB/V+T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX20073ATBB/V+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX20073ATBB/V+T belongs to the MAX20073 family of AEC-Q100-qualified synchronous buck converters engineered specifically for demanding automotive point-of-load applications requiring high efficiency, small size, and robust fault protection.
FAQ
What output voltage is preset on the MAX20073ATBB/V+T?
The MAX20073ATBB/V+T is factory-trimmed to deliver a nominal 3.3V output with ±1.5% accuracy over load, line, and temperature. This eliminates the need for external feedback resistors. The FB pin is internally connected and should remain unconnected in this configuration. The MAX20073ATBB/V+T does not support user-adjustable output via external resistors unless modified per custom order codes.
Does the MAX20073ATBB/V+T include built-in protection features?
Yes, the MAX20073ATBB/V+T integrates cycle-by-cycle overcurrent limiting, thermal shutdown at +165°C junction temperature, input undervoltage lockout, and output overvoltage/undervoltage monitoring that drives the active-low RESET signal. These protections operate autonomously without external components and are fully specified across the -40°C to +125°C ambient range.
Can the MAX20073ATBB/V+T be synchronized to an external clock?
No, the MAX20073ATBB/V+T operates at a fixed 2.2MHz internal oscillator and does not support external clock synchronization. However, it offers a spread-spectrum enable (SSEN) input to modulate switching frequency and reduce EMI peaks. For synchronizable alternatives, consider the MAX20074 variant, which shares the same package but adds SYNC input capability.
What is the thermal pad (EP) connection requirement for the MAX20073ATBB/V+T?
The exposed thermal pad (EP) of the MAX20073ATBB/V+T must be soldered to a dedicated GND copper pour on the PCB for effective heat dissipation. Maxim specifies minimum 6×6 mm² thermal land with ≥4 thermal vias (0.3mm diameter) connecting to inner GND planes. Failure to properly connect EP increases junction temperature by >25°C under 3A load and may trigger thermal shutdown.
Is the MAX20073ATBB/V+T AEC-Q100 qualified?
Yes, the MAX20073ATBB/V+T is AEC-Q100 qualified for Grade 0 (-40°C to +150°C junction) and Grade 1 (-40°C to +125°C ambient) operation. Full qualification includes HTOL, TC, UHAST, and ESD testing per AEC-Q100 Rev H. The device meets automotive reliability standards for under-hood and cabin-mounted electronic control units.
MAX20073ATBB/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX20073ATBB/V+T FAQ
1.How can I place an order for MAX20073ATBB/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20073ATBB/V+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX20073ATBB/V+T reliable?
The price and inventory of MAX20073ATBB/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20073ATBB/V+T is usually 5 days.
3.What payment methods are accepted for MAX20073ATBB/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20073ATBB/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20073ATBB/V+T?
MAX20073ATBB/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20073ATBB/V+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX20073ATBB/V+T?
For technical support, including MAX20073ATBB/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20073ATBB/V+T requirements.
6.How does Aetrix verify that MAX20073ATBB/V+T is sourced from the original manufacturer or authorized distributors?
All MAX20073ATBB/V+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX20073ATBB/V+T meets industry standards.
7.What is the process for return or replacement of MAX20073ATBB/V+T?
All MAX20073ATBB/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20073ATBB/V+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX20073ATBB/V+T part is unused and in its original packaging.
Return procedure for MAX20073ATBB/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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